UNDO: Smart, sustainable, and tailored for businesses
UNDO offers more than just a mobile service. We provide a complete package that helps your business save costs, simplify processes, and positively impact the planet. Key benefits include:

One Tree per new subscription
For every new subscription, we plant a tree. With plans starting from €24/month, we plant one every month, directly contributing to global reforestation.

CO₂ compensation included
All UNDO plans include several kilograms of CO₂ compensation at no extra cost, helping your business support high-quality climate projects from day one.

Real-time CO₂ insights
The UNDO Tracker allows users to see their mobile usage emissions, offset them, and support impactful projects like IBI Village.

Savings without compromise
Save up to 15% on our standard mobile rates while enjoying premium service quality. Transparent pricing with no hidden fees.

Climate-positive network
UNDO is 100% CO₂-neutral and goes a step further by supporting reforestation and other sustainable initiatives.

Cutting-edge technology
Benefit from reliable 5G connectivity, eSIM technology, and strong coverage through our partnership with Orange Belgium.

Simplicity and clarity
Say goodbye to juggling multiple contracts or confusing invoices. UNDO provides one clear invoice for all your mobile services, saving time and streamlining administration.

Flexible add-ons
Customize your plans with extra data, SMS bundles, or support sustainable projects. Tailor your solution to your business needs and sustainability goals.
Our mobile subscriptions (VAT incl.)
Most popular
Lifelong discount structure on standard rates
UNDO offers attractive “lifelong discounts*” for larger teams:
These discounts make it cost-effective to connect your entire team to our sustainable network. Combine savings with a positive climate impact!
* The lifelong discount is valid as long as you stay at UNDO with the minimum amount of required active subscriptions.
Want to discover your lifelong advantage?
With UNDO, you make your operations more efficient and sustainable. Show your customers, employees, and partners that you’re choosing a better future
Frequently asked questions
More FAQ’s available here
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How do I become an UNDO customer as a company?
It’s very simple! You can download our mobile app to do it or via our website by selecting the subscription of your choice.
1. You must first log in with ITSME to create your account.
2. Then follow the order steps until it is finalized.
3. You will receive an email confirmation of your order.
4. Afterwards, send us an email to “support@undo.be” with the contact details of your company: Company name, last + first name of the legal representative, company address and VAT number. We will do the necessary to change your private account into a business account.If you order an eSIM, you will receive a second email with the QR code of your eSIM in order to install it on your smartphone. The activation of your number with an eSIM is generally active within the hour and you can start using it immediately, unless you have made a request for a number transfer. In that case, the delay mainly depends on your current operator!
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How can I transfer my actual phone number from another operator to UNDO?
When ordering, you will need to provide us with all the required information from your previous operator and we will take care of the number transfer. Make sure you fill out all fields accurately for a quick and smooth number transfer. Otherwise your previous operator will simply refuse the transfer of your number.
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Which network does UNDO use?
UNDO uses the Orange network. There is nothing more annoying than a video that won’t load. Our SIM cards are equipped for 5G, both the eSIM and the traditional SIM card. Therefore, our users can rely on a strong and fast network everywhere in Belgium.
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Does UNDO uses the 5G network?
Yes, UNDO uses the 5G network set up by Orange. You have automatic access to it as long as your smartphone allows it and you have authorized access to 5G on your smartphone. Please know that Orange is investing in allowing you to stay connected with your loved ones and your favorite content. To do this, Orange is fully strengthening its 4G network and gradually deploying 5G.
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What is “UNDO Forest”?
UNDO Forest is a project that aims to create a natural carbon sink that will absorb and store carbon below the ground in soil. It’s 100% owned by UNDO. The project is being developed in the Democratic Republic of CONGO, near the town of Kinshasa. We work in collaboration with our partner IBI Village, which helps us with on-ground activities. The project aims to plant 25.000 trees in its 1st phase. The concept of agroforestry is applied that ensure maximum utilization of the land and turn a dry savannah into a habitat filled with acacia, corn, and manioc. Every new subscription guarantees planting 1 tree but that is not it. Under the project, our membres can also support additional social initiatives by adding “UNDO Forest” add-ons to their monthly subscription. This way our community not only helps the planet but also helps out the local population by providing employment, and aid, much like the UN sustainable goals.
UNDO provides regular updates about the progress of the project and on ground activities via photos, videos, or even interviews of locals via our social media channels. Follow UNDO on Facebook, Instagram, Tiktok to stay updated.
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What is “UNDO Removal”?
UNDO Removal aims at connecting the UNDO community to literally carbon removal technologies! In an attempt to balance the amount of carbon released due to human activity, these technologies ensure the removal of atmospheric carbon and long-term storage for over 100 years in different forms such as demolished concrete, or underground sequestration! One of the most critical challenges of the present day faced by such technology-driven projects is the high cost of project execution, which can be lowered by applying the principle of economies of scale. UNDO procures high-quality, certified REMOVAL credits from individual project developers across the globe. Projects are verified by independent 3rd party agencies and follow internationally recognized benchmarks and reporting standards such as Gold standard, Puro earth, and Verra. For our members, UNDO removal is a way to choose projects of their choice and be carbon-neutral by compensating their emissions every month. You can use your CO2 KGs pre-included in your monthy subscription at no extra cost.
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What are my CO² compensations?
As an UNDO member, you have the chance to contribute to the fight against climate change. Planting trees is surely one of the simplest ways of helping and having a direct impact. That is why each new member joigning UNDO plants one tree by default in our UNDO Forest – a natural carbon sink. But that is not all, every UNDO member can also support emerging carbon removal technologies such as biochaar, CCS, and enhanced weathering via “UNDO Removal”. Your monthly emissions calculated via our mobile app can be neutralized by assigning the same or greater number of KGs across one or more removal projects of your choice that UNDO proposes.